Fetal development is typically divided into three main stages:
1. Germinal Stage (Weeks 1-2): This stage includes fertilization and implantation. The zygote divides rapidly and forms a blastocyst, which implants itself in the uterine lining.
2. Embryonic Stage (Weeks 3-8): During this stage, the blastocyst develops into an embryo. Major organs and structures such as the heart, brain, spinal cord, and limbs begin to form. The embryo is highly sensitive to environmental influences during this period.
3. Fetal Stage (Weeks 9-Birth): This stage is characterized by rapid growth and further development of organs and tissues. The fetus becomes more complex and starts to resemble a newborn baby.
